France's military chief says an overnight air raid has destroyed an arms depot for the Islamic State group in Iraq.

Gen. Pierre de Villiers told Europe 1 radio that two French fighter jets dropped a total of 70 bombs, destroying a dozen buildings used for arms production and storage.

"We destroyed buildings in which Daesh produced their arms, their bombs to attack Iraqi forces. Seventy bombs were dropped," de Villiers said Friday, using an acronym for the Islamic State militants. He did not specify the location of the air raid.

Separately, France's military announced airstrikes around Fallujah and Mount Sinjar, where militants had trapped thousands of fleeing Yazidis.